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awesome/jdwm.c

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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include "jdwm.h"
#include "util.h"
#include "event.h"
#include "layout.h"
#include "tag.h"
/* extern */
extern void (*handler[LASTEvent]) (XEvent *, jdwm_config *); /* event handler */
int screen, sx, sy, sw, sh, wax, way, waw, wah;
int bh;
Atom jdwmprops, wmatom[WMLast], netatom[NetLast];
Bool selscreen = True;
Client *clients = NULL;
Client *sel = NULL;
Client *stack = NULL;
Cursor cursor[CurLast];
DC dc;
Window barwin;
Layout ** taglayouts;
/* static */
static int (*xerrorxlib) (Display *, XErrorEvent *);
static Bool otherwm = False, readin = True;
static Bool running = True;
Bool
gettextprop(Display *disp, Window w, Atom atom, char *text, unsigned int size)
{
char **list = NULL;
int n;
XTextProperty name;
if(!text || size == 0)
return False;
text[0] = '\0';
XGetTextProperty(disp, w, &name, atom);
if(!name.nitems)
return False;
if(name.encoding == XA_STRING)
strncpy(text, (char *) name.value, size - 1);
else if(XmbTextPropertyToTextList(disp, &name, &list, &n) >= Success && n > 0 && *list)
{
strncpy(text, *list, size - 1);
XFreeStringList(list);
}
text[size - 1] = '\0';
XFree(name.value);
return True;
}
static void
cleanup(Display *disp, jdwm_config *jdwmconf)
{
close(STDIN_FILENO);
while(stack)
{
unban(stack);
unmanage(stack, &dc, NormalState, jdwmconf);
}
if(dc.font.set)
XFreeFontSet(disp, dc.font.set);
else
XFreeFont(disp, dc.font.xfont);
XUngrabKey(disp, AnyKey, AnyModifier, DefaultRootWindow(disp));
XFreePixmap(disp, dc.drawable);
XFreeGC(disp, dc.gc);
XDestroyWindow(disp, barwin);
XFreeCursor(disp, cursor[CurNormal]);
XFreeCursor(disp, cursor[CurResize]);
XFreeCursor(disp, cursor[CurMove]);
XSetInputFocus(disp, PointerRoot, RevertToPointerRoot, CurrentTime);
XSync(disp, False);
p_delete(&taglayouts);
}
static long
getstate(Display *disp, Window w)
{
int format, status;
long result = -1;
unsigned char *p = NULL;
unsigned long n, extra;
Atom real;
status = XGetWindowProperty(disp, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
&real, &format, &n, &extra, (unsigned char **) &p);
if(status != Success)
return -1;
if(n != 0)
result = *p;
XFree(p);
return result;
}
static void
scan(Display *disp, jdwm_config *jdwmconf)
{
unsigned int i, num;
Window *wins, d1, d2;
XWindowAttributes wa;
wins = NULL;
if(XQueryTree(disp, DefaultRootWindow(disp), &d1, &d2, &wins, &num))
for(i = 0; i < num; i++)
{
if(!XGetWindowAttributes(disp, wins[i], &wa)
|| wa.override_redirect || XGetTransientForHint(disp, wins[i], &d1))
continue;
if(wa.map_state == IsViewable || getstate(disp, wins[i]) == IconicState)
manage(disp, &dc, wins[i], &wa, jdwmconf);
}
/* now the transients */
for(i = 0; i < num; i++)
{
if(!XGetWindowAttributes(disp, wins[i], &wa))
continue;
if(XGetTransientForHint(disp, wins[i], &d1)
&& (wa.map_state == IsViewable || getstate(disp, wins[i]) == IconicState))
manage(disp, &dc, wins[i], &wa, jdwmconf);
}
if(wins)
XFree(wins);
}
static void
setup(Display *disp, jdwm_config *jdwmconf)
{
int i;
unsigned int mask;
Window w;
XSetWindowAttributes wa;
/* init atoms */
jdwmprops = XInternAtom(disp, "_JDWM_PROPERTIES", False);
wmatom[WMProtocols] = XInternAtom(disp, "WM_PROTOCOLS", False);
wmatom[WMDelete] = XInternAtom(disp, "WM_DELETE_WINDOW", False);
wmatom[WMName] = XInternAtom(disp, "WM_NAME", False);
wmatom[WMState] = XInternAtom(disp, "WM_STATE", False);
netatom[NetSupported] = XInternAtom(disp, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(disp, "_NET_WM_NAME", False);
XChangeProperty(disp, DefaultRootWindow(disp), netatom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatom, NetLast);
/* init cursors */
cursor[CurNormal] = XCreateFontCursor(disp, XC_left_ptr);
cursor[CurResize] = XCreateFontCursor(disp, XC_sizing);
cursor[CurMove] = XCreateFontCursor(disp, XC_fleur);
/* select for events */
wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
| EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
wa.cursor = cursor[CurNormal];
XChangeWindowAttributes(disp, DefaultRootWindow(disp), CWEventMask | CWCursor, &wa);
XSelectInput(disp, DefaultRootWindow(disp), wa.event_mask);
grabkeys(disp, jdwmconf);
compileregs(jdwmconf);
/* geometry */
sx = sy = 0;
sw = DisplayWidth(disp, screen);
sh = DisplayHeight(disp, screen);
initlayouts(jdwmconf);
/* bar */
dc.h = bh = dc.font.height + 2;
wa.override_redirect = 1;
wa.background_pixmap = ParentRelative;
wa.event_mask = ButtonPressMask | ExposureMask;
barwin = XCreateWindow(disp, DefaultRootWindow(disp), sx, sy, sw, bh, 0,
DefaultDepth(disp, screen), CopyFromParent,
DefaultVisual(disp, screen),
CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
XDefineCursor(disp, barwin, cursor[CurNormal]);
updatebarpos(disp, jdwmconf->current_bpos);
XMapRaised(disp, barwin);
/* pixmap for everything */
dc.drawable = XCreatePixmap(disp, DefaultRootWindow(disp), sw, bh, DefaultDepth(disp, screen));
dc.gc = XCreateGC(disp, DefaultRootWindow(disp), 0, 0);
XSetLineAttributes(disp, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(disp, dc.gc, dc.font.xfont->fid);
/* multihead support */
selscreen = XQueryPointer(disp, DefaultRootWindow(disp), &w, &w, &i, &i, &i, &i, &mask);
loadjdwmprops(disp, jdwmconf);
}
/*
* Startup Error handler to check if another window manager
* is already running.
*/
static int
xerrorstart(Display * dsply __attribute__ ((unused)), XErrorEvent * ee __attribute__ ((unused)))
{
otherwm = True;
return -1;
}
/* extern */
void
uicb_quit(Display *disp __attribute__ ((unused)),
jdwm_config *jdwmconf __attribute__((unused)),
const char *arg __attribute__ ((unused)))
{
readin = running = False;
}
void
updatebarpos(Display *disp, int bpos)
{
XEvent ev;
wax = sx;
way = sy;
wah = sh;
waw = sw;
switch (bpos)
{
default:
wah -= bh;
way += bh;
XMoveWindow(disp, barwin, sx, sy);
break;
case BarBot:
wah -= bh;
XMoveWindow(disp, barwin, sx, sy + wah);
break;
case BarOff:
XMoveWindow(disp, barwin, sx, sy - bh);
break;
}
XSync(disp, False);
while(XCheckMaskEvent(disp, EnterWindowMask, &ev));
}
/* There's no way to check accesses to destroyed windows, thus those cases are
* ignored (especially on UnmapNotify's). Other types of errors call Xlibs
* default error handler, which may call exit.
*/
int
xerror(Display * edpy, XErrorEvent * ee)
{
if(ee->error_code == BadWindow
|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
|| (ee->request_code == X_PolyFillRectangle
&& ee->error_code == BadDrawable)
|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
|| (ee->request_code == X_ConfigureWindow
&& ee->error_code == BadMatch) || (ee->request_code == X_GrabKey
&& ee->error_code == BadAccess)
|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
return 0;
fprintf(stderr, "jdwm: fatal error: request code=%d, error code=%d\n",
ee->request_code, ee->error_code);
return xerrorxlib(edpy, ee); /* may call exit */
}
int
main(int argc, char *argv[])
{
char *p;
int r, xfd;
fd_set rd;
XEvent ev;
Display * dpy;
Window root;
jdwm_config jdwmconf;
if(argc == 2 && !strcmp("-v", argv[1]))
eprint("jdwm-" VERSION " © 2007 Julien Danjou\n");
else if(argc != 1)
eprint("usage: jdwm [-v]\n");
setlocale(LC_CTYPE, "");
if(!(dpy = XOpenDisplay(NULL)))
eprint("jdwm: cannot open display\n");
xfd = ConnectionNumber(dpy);
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
XSetErrorHandler(xerrorstart);
/* this causes an error if some other window manager is running */
XSelectInput(dpy, root, SubstructureRedirectMask);
XSync(dpy, False);
if(otherwm)
eprint("jdwm: another window manager is already running\n");
XSync(dpy, False);
XSetErrorHandler(NULL);
xerrorxlib = XSetErrorHandler(xerror);
XSync(dpy, False);
parse_config(dpy, screen, &dc, &jdwmconf);
setup(dpy, &jdwmconf);
drawstatus(dpy, &jdwmconf);
scan(dpy, &jdwmconf);
XSync(dpy, False);
/* main event loop, also reads status text from stdin */
while(running)
{
FD_ZERO(&rd);
if(readin)
FD_SET(STDIN_FILENO, &rd);
FD_SET(xfd, &rd);
if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1)
{
if(errno == EINTR)
continue;
eprint("select failed\n");
}
if(FD_ISSET(STDIN_FILENO, &rd))
{
switch (r = read(STDIN_FILENO, jdwmconf.statustext, sizeof(jdwmconf.statustext) - 1))
{
case -1:
strncpy(jdwmconf.statustext, strerror(errno), sizeof(jdwmconf.statustext) - 1);
jdwmconf.statustext[sizeof(jdwmconf.statustext) - 1] = '\0';
readin = False;
break;
case 0:
strncpy(jdwmconf.statustext, "EOF", 4);
readin = False;
break;
default:
for(jdwmconf.statustext[r] = '\0', p = jdwmconf.statustext + strlen(jdwmconf.statustext) - 1;
p >= jdwmconf.statustext && *p == '\n'; *p-- = '\0');
for(; p >= jdwmconf.statustext && *p != '\n'; --p);
if(p > jdwmconf.statustext)
strncpy(jdwmconf.statustext, p + 1, sizeof(jdwmconf.statustext));
}
drawstatus(dpy, &jdwmconf);
}
while(XPending(dpy))
{
XNextEvent(dpy, &ev);
if(handler[ev.type])
(handler[ev.type]) (&ev, &jdwmconf); /* call handler */
}
}
cleanup(dpy, &jdwmconf);
XCloseDisplay(dpy);
return 0;
}
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